164 157 Tooth Flexplate

The AOD/AOD-E/4R70W utilizes the 164-tooth flexplate (right). The 157-tooth flexplate (left) is for the C4. Keep in mind for AOD conversions that you can buy a 164-tooth flexplate in either 28-ounce or 50-ounce balance configurations. Ensure you have the proper flexplate (check your engine’s paperwork or ask your builder). The AOD has an aluminum engine separator plate.